for certain

Idioms  

1. Also, for sure. Without doubt. For example, I can't tell for certain if this is the right color, or I know for sure that she has a new car. The first term dates from the early 1300s. The variant, dating from the late 1500s, is also used colloquially to express agreement or assert the truth of a statement, as in Mary is really bossy.—That's for sure, or Are you coming to the party?—For sure I am.

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Example Sentences

In recent years, several observational studies have suggested that GLP-1 drugs may be associated with lower risks for certain cancers or improved outcomes among cancer survivors.

From Science Daily • Jun. 6, 2026

What’s more, many Advantage plans are structured as health maintenance organizations with limited choices of doctors, referral requirements for specialists, and prior authorization requirements for certain procedures.

From Barron's • Jun. 4, 2026

SpaceX plans to reserve 5% of its outstanding common stock for certain employees and others selected by its executive officers, the company said on Monday.

From MarketWatch • Jun. 1, 2026

The insurer will additionally introduce authorization waivers for certain procedures performed at pediatric hospitals.

From The Wall Street Journal • May 29, 2026

My Abue, she will for certain share with Serafina her remedies—which herbs are the most useful, the most potent, the most prized for this work before them.

From "Beast Rider" by Tony Johnston & María Elena Fontanot de Rhoads

Related Words

• absolutely
• altogether
• carefully
• completely
• correctly
• definitely
• explicitly
• indeed
• literally
• precisely
• quite
• specifically
• strictly
• totally
• truly